ev_count(3event)

ev_count -- returns the number of events currently in the queue

Synopsis

cc . . . -levent

#include  <sys/types.h>
#include  <sys/param.h>
#include  <sys/sysmacros.h>
#include  <sys/page.h>
#include  <sys/event.h>
#include  <mouse.h>

int ev_count()

Description

ev_count Returns the number of events currently in the queue. An event queue must have been opened with ev_init and ev_open.

Return values

ev_count returns -1 if there is not an open event queue.

References

ev_block(3event), ev_close(3event), ev_flush(3event), ev_getdev(3event), ev_getemask(3event), ev_gindev(3event), ev_init(3event), ev_open(3event), ev_pop(3event), ev_read(3event), ev_resume(3event), ev_setemask(3event), ev_suspend(3event)

Standards conformance

ev_count is not part of any currently supported standard; it is an extension of AT&T System V provided by the Santa Cruz Operation.